Notice that the type is "picture" and that you are missing the horizonLevel. The .ywl file is generated by yoWindow when you create a custom landscape. The only thing you need to change when you use your custom landscape with the widget for a website is <data src="picturename.png" horizonLevel="000"/> to <data src="picturename.swf" horizonLevel="000"/> to match the picture you converted to the .swf format. Please see these FAQs for more details. http://yowindow.com/live_sky_picture.php - http://yowindow.com/widget_and_landscape. Of course the part about the crossdomain.xml file in the second FAQ does not apply to the standalone widget.